Search a number
-
+
30231541131605 = 5116725747516719
BaseRepresentation
bin1101101111110110101000…
…10001010010100101010101
310222001002220002011221110222
412313323110101102211111
512430303144012202410
6144144102301124125
76240104525500142
oct667732421224525
9128032802157428
1030231541131605
1196a614091a270
1234830a9b59645
1313b3a8c1b73b8
147673004453c9
153765d22e8955
hex1b7ed4452955

30231541131605 has 64 divisors (see below), whose sum is σ = 40337299537920. Its totient is φ = 21566392320000.

The previous prime is 30231541131581. The next prime is 30231541131661. The reversal of 30231541131605 is 50613114513203.

It is not a de Polignac number, because 30231541131605 - 232 = 30227246164309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4499407436 + ... + 4499414154.

It is an arithmetic number, because the mean of its divisors is an integer number (630270305280).

Almost surely, 230231541131605 is an apocalyptic number.

It is an amenable number.

30231541131605 is a deficient number, since it is larger than the sum of its proper divisors (10105758406315).

30231541131605 is a wasteful number, since it uses less digits than its factorization.

30231541131605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11810.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 30231541131605 its reverse (50613114513203), we get a palindrome (80844655644808).

The spelling of 30231541131605 in words is "thirty trillion, two hundred thirty-one billion, five hundred forty-one million, one hundred thirty-one thousand, six hundred five".

Divisors: 1 5 11 55 67 257 335 737 1285 2827 3685 4751 6719 14135 17219 23755 33595 52261 73909 86095 189409 261305 318317 369545 450173 947045 1221007 1591585 1726783 2250865 3501487 4951903 6105035 8633915 13431077 17507435 18994613 24759515 31921969 67155385 81807469 94973065 115694461 159609845 351141659 409037345 578472305 899882159 1272639071 1755708295 2138771923 4499410795 6363195355 8203946033 10693859615 23526491153 41019730165 90243406363 117632455765 451217031815 549664384211 2748321921055 6046308226321 30231541131605